Power supply apparatus



FIG. 1 is a top view of an power supply apparatus, showing my new design;

FIG. 2 is an enlarged front view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a front perspective view thereof;

FIG. 5 is an enlarged back view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is another side view thereof; and,

FIG. 8 is a rear perspective view thereof. 

CLAIM I claim, the ornamental design for an power supply apparatus, as shown and described. 